211222120000 has 70 divisors (see below), whose sum is σ = 523762309598. Its totient is φ = 84488832000.

The previous prime is 211222119949. The next prime is 211222120003. The reversal of 211222120000 is 21222112.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 100103897664 + 111118222336 = 316392^2 + 333344^2 .

It is a super-2 number, since 2×211222120000² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211222120003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2600277 + ... + 2680276.

Almost surely, 2^211222120000 is an apocalyptic number.

211222120000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211222120000 is an abundant number, since it is smaller than the sum of its proper divisors (312540189598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211222120000 is an frugal number, since it uses more digits than its factorization.

211222120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5280585 (or 5280560 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 211222120000 its reverse (21222112), we get a palindrome (211243342112).

The spelling of 211222120000 in words is "two hundred eleven billion, two hundred twenty-two million, one hundred twenty thousand".